The trio joins cast mates Robert Buckley, Jana Kramer and Lisa Goldstein, who have already signed on for another year. The long-running CW drama has yet to be renewed, but this latest contract news makes a Season 9 look like more of a possibility.
"Well faithful followers," Bush tweeted late Monday. "I am officially in for ONE last year of OTH. The writers have GREAT plans! Now all we need is a CW pick up!"
Bush and Galeotti are two of the series' last three remaining original cast mates. Galeotti's on-screen husband, James Lafferty, is expected to return part-time if the series is picked up, according to TVLine.
"I certainly can't stay there forever," Lafferty told TVGuide.com recently about the show's future. "It's like leaving your parents' house: It's got to happen at some point, you've got to graduate."
One Tree Hill has averaged 1.86 million viewers so far this season. The show was originally supposed to come back for only 13 episodes, but an additional nine were ordered after strong ratings early in the season.
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